Mercury condenser water tube steam boiler



June 28, 1932. w. A. JONES usacuny CONDENSER WATER TUBE STEAM 1301mm Filed July 6. 1928 2 Sheets-Sheet l INVENTOR BY W J- w/W' ATTORNEYS June 28, 1932.

W. A. JONES MERCURY CONDENSER WATER TUBE STEAM BOILER Filed July 6, 1928 2 Sheets-Sheet 2 INVENTOR OOOOOOOOO 79 'ATTORNEYJ Patented June 28, 1932 UNITED STATES PATENT OFFICE WILLIAM A. JONES, OF WESTERLEIGH,

NEW YORK, ASSIGNOR TO THE BABCOCK &

WILOOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY MERCURY CONDENSER WATER TUBE STEAM. BOILER Application filed July 6, 1928. Serial No. 290,728.

This invention relates to a water tube boiler in which the boiler elements are made up of standard parts of the Babcock & Wilcox type of boiler and the steam generating surfaces are enclosed in a casing into which mercury vapors are introduced for generating the steam.

The invention will be understood from the description in connection with the accom- 1 panying drawings in which Fig. 1 is a vertiwalls.

cal section through an illustrative embodiment of the invention; Fig. 2 is a plan view of the device taken along the line 2-2 of Fig. 1; Fig. 3 is a section along the line 33 of Fig. 2; Fig. 4 is a section on an enlarged scale showing an expansion joint at the corner casing; Fig. 5 is a section partly broken away through the headers showing a closure for the space between the headers taken along the line 55 ofFig. 6; Fig. 6 is a side view of 2 headers showing a closure plate in place; Fig. 7 is an enlarged view showing an expansion joint in the casing; Fig. 8 is a plan view showing the casing attached to the ends of headers, and Fig. 9 is a side view corresponding to Fig. 8.

In the drawings reference character 1 indicates a steam'and water drum of a Babcock & Wilcox type of boiler that may be supported from any convenient support by means of the straps 2. A battle 3 is provided in this drum to aid in separating the steam and water and a steam outlet is indicated at 4. Downtake headers 5 and uptake headers 6 are connected to the water space and the steam space of the drum 1 by means of the nipples 7 and circulating tubes 8, respectively. A bank of inclined tubes 9 connects the headers 5 and 6 in the usual way. A valved drain pipe 10 is connected to the cross mud drum 11 that is nippled to the lower ends of the downtake headers 5 by means of the. nipples 12.

The row of headers 5 and the row of headers 6 may be sinuous as shown in Figs. 3 and 6 and plates 13 are applied tothe joints between the headers so as to provide air-tight A series of horizontal cross I-beams 14 extends across the upper side of the bank of inclined tubes 9 and a similar series of I- ams extends across the lower side of the -14, and this casing is attached to the headers so that the headers 5 and 6 and casing 15 all form a box-like structure enclosing the, bank of tubes 9. An inlet 16 for mercury vapors is provided on one side of the casing and an outlet 17 for the condensate is provided at the lowest point of the casing.

The way the casing 15 is applied to the headers 5 and 6, tubes 9, and the I-beams 14 so as to enclose the same in a vapor-tight manner and still permit expansion and contraction of the casing to take place is clearly shown in Figs. 3 to 9. An expansion joint 18 is shown near the headers 5 in Figs. 8 and 9, and an edge of the casing 15 is welded to the upper ends of the headers as shown at 19, and the ends of the plates 13 that coverthe joints between the headers as indicated at 20. Another expansion joint is shown at the lower left-hand portion of the casing in Fig. 3 and on a larger scale in Fig. 4. The adjacent edges of the casing 15 are curved around and make semicircles at 21, and the edges are welded together at 22. Another expansion joint is shown at 23 for the casin 15 along the upper row of I-beams 14, am? is shown in Fig. 7 as being made by folding the metal or casing partially back upon itself.

The operation is as follows: The drum 1 is kept filled with water to the normal level in the usual way and the mercury vapors entering through the inlet 16 condense around the tubes 9 and generate steam in the manner similar to the way steam is ordinarily generated in tubes of this character by hot products of combustion passing over them, the condensed mercury l vapor-tight and headers, an air tight casing around said tubes attached to said headers, supports to prevent said casing from moving toward said tubes, and means closing the spaces between 5 said headers which together with said headers constitute the ends of said casing.

2. In combination, a water tube boiler, headers, sealing strips welded between headers, tubes connected to the headers and an enclosure for the tube section in welded relation with said headers to provide a vaportight chamber.

3. In combination, a water tube boiler, headers, tubes connected to the headers, means joining said headers in vapor-tight relation with respect to each other at the respective ends of the boiler tube section, an enclosure for the tube section cooperating with said headers to provide a vapor-tight chamber,

and expansion members incorporated in the enclosure to relieve the strain on the cooperating parts of the enclosure and headers.

4. In combination, a water tube boiler, headers, tubes connected to the headers,

28 means joining said headers in vapor-tight relation with respect to each other at the respective ends of the boiler tube section, and a welded enclosure for the tube section cooperating with said headers to provide a chamber and having inherent mower and tube section to prevent collapse of the enclosure when under vacuum.

8. In combination, a water tube boiler with headers, tubes connected to the headers, means joining said headers in welded relation with respect to each other at the respective ends of the boiler tube section, an enclosure for the tube section welded to said headers and around said tube section and provided with lateral and longitudinal compensating means relieving tension due to expansion and contraction, and supporting members between the enclosure and tube section to prevent collapse of the enclosure when under vacuum.

9. In combination, a steam boiler of the water tube type, headers, tubes connected to said headers, a casing surrounding the tubes and welded to the headers of the boiler which thereby form the end walls of the casing, and sealing strips welded over the interstices between the headers to form a vapor-tight wall.

10. In combination, a steam boiler of the water tube type, tubes and headers, the latter provided with clean-outs at the tube ends, a surrounding casing connected to the headers, and stri s welded over the interstices between the hea ers to rovide a vapor-tight structure leaving the tu e cleaning members exposed.

' WILLIAM A. JONES.

means compensating for-expansion and contraction.

'5. In combination, a water tube boiler, headers, tubes connected to the headers,

means oining said headers in welded relation with respect to each other at the res ective ends of the boiler tube section, an an enclosure for the tube section welded to said headers and around said tube section and pro- 0 vided with lateral and longitudinal compensating means relieving tension due to expansion and contraction.

6. In combination, a water tube boiler, headers, tubes connected to the headers,

48 means oining said .headers in vapor-tight relation with respect to each other at the respective ends of the boiler tube section, an enclosure for the tube section cooperating with said fheaders to provide a vapor-tight l0 chamber, expansion members incorporated in the enclosure to relieve the strain on the cooperating parts of the enclosure and headers, and supporting members between the enclosure and tube section to prevent collapse of the enclosure when under vacuum.

7 In combination, a water tube boiler with headers, tubes "connected to the headers, means joining said headers in vapor-tight relation with respect to each other at the respecoo tive ends of the boiler tube section, a welded enclosure for the tube section cooperating with said headers to provide a vapor-tight chamber and havin .inherent means com- .pensating forexpanslon and contraction, and

supporting members between the enclosure 

